Staff changing prices

So Sunday I bought bambo blinds and the orice at the display was R179. The one fit and the other was too small so on monday I returned the blind. When I checked my credit note it was showing R299 I was abit confused so I went to the ale to check and the price was R179 which a gentleman who works for makro confirmed and said go to customer service when I told the lady that was helping me she said she would check I said I would come back later as I was also buying a TV when I git back to her she said ni you werr charged the correct price and when I took her to the ale the price was then removed. I was so annoyed as I did not take a picture as I did not think that the staff would be ********* and remove the price. The lady at customer service denays removing the price but states she saw the price but the person incharge if the ale told her I was charged the correct price. I am very upset as I was decived by the staff and when asked to speak to a manger there and there I was told the store is closing. For the staff to just remove the price, and then when asked to show me the price that I was charged dy couldn’t as it was not on there.